The kinetic energy of the object is the energy conserved due to the motion of the object.
A cart of 3 kg mass has the kinetic energy of 96 joules hence the speed of the cart is 8 m/s.
Given that cart has a kinetic energy of 96 Joules and the mass of the cart is 3 kg.
The formula for kinetic energy is given below.
[tex]KE = \dfrac {1}{2} mv^2[/tex]
Where KE is the kinetic energy of the cart, m is the mass of the cart and v is the speed of the cart.
Substituting the given values in the above formula to calculate the speed of the cart.
[tex]96 = \dfrac {1}{2} \times 3\times v^2[/tex]
[tex]v^2 = 64[/tex]
[tex]v = 8 \;\rm m/s[/tex]
Hence we can conclude that the speed of the cart is 8 m/s.
To know more about kinetic energy, follow the link given below.
https://brainly.com/question/999862.
